Sources and distributions of dust aerosols simulated with the GOCART model
Paul Ginoux,Mian Chin,Ina Tegen,Joseph M. Prospero,Brent N. Holben,Oleg Dubovik,Shian-Jiann Lin +6 more
TLDR
In this article, the global distribution of dust aerosol is simulated with the Georgia Tech/Goddard Global Ozone Chemistry Aerosol Radiation and Transport (GOCART) model.Abstract:
The global distribution of dust aerosol is simulated with the Georgia Tech/Goddard Global Ozone Chemistry Aerosol Radiation and Transport (GOCART) model. In this model all topographic lows with bare ground surface are assumed to have accumulated sediments which are potential dust sources. The uplifting of dust particles is expressed as a function of surface wind speed and wetness. The GOCART model is driven by the assimilated meteorological fields from the Goddard Earth Observing System Data Assimilation System (GEOS DAS) which facilitates direct comparison with observations. The model includes seven size classes of mineral dust ranging from 0.1–6 μm radius. The total annual emission is estimated to be between 1604 and 1960 Tg yr−1 in a 5-year simulation. The model has been evaluated by comparing simulation results with ground-based measurements and satellite data. The evaluation has been performed by comparing surface concentrations, vertical distributions, deposition rates, optical thickness, and size distributions. The comparisons show that the model results generally agree with the observations without the necessity of invoking any contribution from anthropogenic disturbances to soils. However, the model overpredicts the transport of dust from the Asian sources to the North Pacific. This discrepancy is attributed to an overestimate of small particle emission from the Asian sources.read more
Citations
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Environmental characterization of global sources of atmospheric soil dust identified with the nimbus 7 total ozone mapping spectrometer (toms) absorbing aerosol product
TL;DR: In this article, the authors used the Total Ozone Mapping Spectrometer (TOMS) sensor on the Nimbus 7 satellite to map the global distribution of major atmospheric dust sources with the goal of identifying common environmental characteristics.
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Global Iron Connections Between Desert Dust, Ocean Biogeochemistry, and Climate
Tim Jickells,Zhisheng An,Katrine Krogh Andersen,Alex R. Baker,Gilles Bergametti,Nick Brooks,Junji Cao,Philip W. Boyd,Robert A. Duce,Keith A. Hunter,Hodaka Kawahata,Nilgun Kubilay,Julie LaRoche,Peter S. Liss,Natalie M. Mahowald,Joseph M. Prospero,Andy Ridgwell,Ina Tegen,Rodrigo Torres +18 more
TL;DR: The iron cycle, in which iron-containing soil dust is transported from land through the atmosphere to the oceans, affecting ocean biogeochemistry and hence having feedback effects on climate and dust production, is reviewed.
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Couplings between changes in the climate system and biogeochemistry
Surabi Menon,Kenneth L. Denman,Guy Brasseur,Amnat Chidthaisong,Philippe Ciais,Peter M. Cox,Robert E. Dickinson,Didier Hauglustaine,Christoph Heinze,Elisabeth A. Holland,Daniel J. Jacob,Ulrike Lohmann,S. Ramachandran,Pedro Leite da Silva Dias,Steven C. Wofsy,Xiaoye Zhang +15 more
TL;DR: Denman et al. as discussed by the authors presented the Couplings between changes in the climate system and biogeochemistry Coordinating Lead Authors: Kenneth L. Denman (Canada), Guy Brasseur (USA, Germany), Amnat Chidthaisong (Thailand), Philippe Ciais (France), Peter M. Cox (UK), Robert E. Austin (USA), D.B. Wofsy (USA) and Xiaoye Zhang (China).
Journal ArticleDOI
GFDL's CM2 global coupled climate models. Part I: Formulation and simulation characteristics
Thomas L. Delworth,Anthony J. Broccoli,Anthony Rosati,Ronald J. Stouffer,Venkatramani Balaji,John A. Beesley,William Cooke,Keith W. Dixon,John P. Dunne,Krista A. Dunne,Jeffrey W. Durachta,Kirsten L. Findell,Paul Ginoux,Anand Gnanadesikan,C. T. Gordon,Stephen M. Griffies,Rich Gudgel,Matthew Harrison,Isaac M. Held,Richard S. Hemler,Larry W. Horowitz,Stephen A. Klein,Stephen A. Klein,Thomas R. Knutson,Paul J. Kushner,A. R. Langenhorst,Hyun Chul Lee,Shian-Jiann Lin,Jian Lu,Sergey Malyshev,Paul C.D. Milly,Venkatachalam Ramaswamy,Joellen L. Russell,M. Daniel Schwarzkopf,Elena Shevliakova,Joseph J. Sirutis,Michael J. Spelman,W. Stern,Michael Winton,Andrew T. Wittenberg,Bruce Wyman,Fanrong Zeng,Rong Zhang +42 more
TL;DR: In this paper, the formulation and simulation characteristics of two new global coupled climate models developed at NOAA's Geophysical Fluid Dynamics Laboratory (GFDL) are described and two versions of the coupled model are described.
Journal ArticleDOI
Tropospheric Aerosol Optical Thickness from the GOCART Model and Comparisons with Satellite and Sun Photometer Measurements
Mian Chin,Paul Ginoux,Stefan Kinne,Stefan Kinne,Omar Torres,Omar Torres,Brent N. Holben,Bryan N. Duncan,Randall V. Martin,Jennifer A. Logan,Akiko Higurashi,Teruyuki Nakajima +11 more
TL;DR: The Georgia Institute of Technology's Goddardard Global Ozone Chemistry Aerosol Radiation and Transport (GOCART) model is used to simulate the aerosol optical thickness t for major types of tropospheric aerosols including sulfate, dust, organic carbon (OC), black carbon (BC), and sea salt.
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